function opcionMenuPrincipal(url, indiceMenu){
    
    
    loadpages(url, '#content2');
    
    for(i=1; i< 13; i++){
        if(i === indiceMenu)
            document.getElementById('elemento'+i).className = "nav active";
        else
            document.getElementById('elemento'+i).className = "nav";
    }
}

function iniciarMenu(){
Layout.init ();
	Menu.init ();
	
	Nav.init ();
}